
I really don't know if people know anything about propane at all. Some people honestly don't like the fact that they have a big bulky tank in their yard that has to be filled every year with money they claim to not have. They consider driving the truck into their driveway actually becomes an 'intrusion' to their privacy and I become the outsider trespassing on their property long enough to fill their tank, collect payment and leave tracks in their yard. (Side note: I don't like to leave the concrete if I can at all avoid it.)
I do run into those however who want to paint a tank a color to match the house they live in. If it's white, aluminum or other heat-reflective color this is not a problem. But imagine a tank painted brown, dark brown to color coordinate with the walls and trim on your single-wide, 16' X 80' trailer. It can be a very confusing task to try and explain the scientific reasons why I cannot legally fill their tank because it is the wrong color. This is not like the popular TV show What Not To Wear and the poor person keeps mixing plaids with stripes, this is about the fact that darker colors make the tank hotter thus making the liquid propane expand in large quantities so the additional heat can make it explode. Nature is not always kind, and it is a community service to correct this misconception if they want their tank to last a few more years of which are also not cheap.
The most volatile characteristic of liquid propane is how it reacts to temperature. At 0° F outside temperature liquid propane will not expand much in a tank at all and will have hardly any vapor pressure. However, at 117° F, which is known to happen in Texas, a fully filled propane tank (at about 80 % of listed water capacity of the tank) with a working pressure of 250 psi has a very serious chance of spewing gas through the relief valve like Old Faithful. Darker colors retain heat, this is why heat-reflective colors are required for the outside surface area of the of a propane storage tank. Even Cliff and Stacy would agree that lighter colors in the summer time would totally lower the sweat factor, and the psi pressure in your tank.
When a tank spews forth like a raging geyser it then becomes a liability and costs hundreds of dollars to fix. Also prompting calls to the fire department and other authorities who will in turn ask the question as to why their propane tank was painted brown. Evacuation of the area might even be mandatory costing people valuable time away from their homes. Once a relief valve pops off, then the tank can no longer be used in the storage of liquid propane until this valve is replaced, costing unnecessary dollars and down time. We certainly want to help protect our friends and neighbors safe by being able to keep the water heaters and ovens going. Everybody wants hot food and showers, so is it worth the cost to paint your propane tank brown? Vanity cannot afford this cost.
No comments:
Post a Comment